The crew of the USS Enterprise-E are forced to deal with a threat to the United Federation of Planets from a clone of Captain Picard named Shinzon, who has taken control of the Romulan Star Empire in a coup d'état. It is the tenth film in the Star Trek film series, as well as the fourth and final film to star the cast of Star Trek: The Next Generation.

References:
https://en.wikipedia.org/wiki/Star_Trek:_Nemesis